Summary for thread sealant -70 c Discussion
The thread sealant suitable for -70 °C question asks for a product that can handle R22 refrigerant at very low temperature. Bharat Gandhi of Wellington, New Zealand says the application needs a thread sealant for use on R22 at -70 °C. The only answer in the thread comes from Whitaker of Aurora, Illinois, who reports great success using Teflon tape on liquid CO2 lines. Whitaker says the Teflon is fairly inert and will not crystallize, implying it may be a practical low-temperature sealing option. No other products or test data are given, so the discussion is limited to one suggested approach rather than a confirmed specification match.
Q. We have an application requiring thread sealant suitable for use on R22 refrigerant at -70 °C. Do you have any suitable product to meet this specification?
Bharat Gandhi
– Wellington, New Zealand
A. We have had great success with Teflon tape on our liquid CO2 lines. The Teflon is fairly inert and will not crystallize.
Whitaker
– Aurora, Illinois, U.S.A.